LTspice email address ltspice@analog.com not working

Hello,

I tried a few times since a week to send a bug report to LTspice@analog.com using my German email provider.
All my messages returned with an error message that the message couldn't be delivered. See the attached text below.
Today somebody from Great Britain had the same problem.

Is this email address  for bug reports - LTspice@analog.com - out of service?

Helmut

The original message was received at Fri, 7 Jun 2019 08:03:48 -0700
from m0097680.ppops.net [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<LTSpice@Linear.com>
    (reason: 550-5.1.1 The email account that you tried to reach does not exist. Please try)

   ----- Transcript of session follows -----
... while talking to aspmx.l.google.com.:
DATA
<<< 550-5.1.1 The email account that you tried to reach does not exist. Please try
<<< 550-5.1.1 double-checking the recipient's email address for typos or
<<< 550-5.1.1 unnecessary spaces. Learn more at
<<< 550 5.1.1  https://support.google.com/mail/?p=NoSuchUser r2si765684ywe.455 - gsmtp
550 5.1.1 <LTSpice@Linear.com>... User unknown
<<< 503 5.5.1 RCPT first. r2si765684ywe.455 - gsmtp

Reporting-MTA: dns; mx0b-00227201.pphosted.com
Received-From-MTA: DNS; m0097680.ppops.net
Arrival-Date: Fri, 7 Jun 2019 08:03:48 -0700

Final-Recipient: RFC822; LTSpice@Linear.com
Action: failed
Status: 5.1.1
Remote-MTA: DNS; aspmx.l.google.com
Diagnostic-Code: SMTP; 550-5.1.1 The email account that you tried to reach does not exist. Please try
Last-Attempt-Date: Fri, 7 Jun 2019 08:03:48 -0700